545142125520 has 120 divisors (see below), whose sum is σ = 1880249305896. Its totient is φ = 141442274304.

The previous prime is 545142125519. The next prime is 545142125551. The reversal of 545142125520 is 25521241545.

545142125520 is a `hidden beast` number, since 5 + 4 + 5 + 1 + 4 + 2 + 125 + 520 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 175604578704 + 369537546816 = 419052^2 + 607896^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10205007 + ... + 10258286.

Almost surely, 2^545142125520 is an apocalyptic number.

It is an amenable number.

545142125520 is an abundant number, since it is smaller than the sum of its proper divisors (1335107180376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545142125520 is a wasteful number, since it uses less digits than its factorization.

545142125520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20463349 (or 20463340 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 545142125520 in words is "five hundred forty-five billion, one hundred forty-two million, one hundred twenty-five thousand, five hundred twenty".